UML Design Tools

Several tools exist for creating UML, or class diagrams, preparatory to coding a project. Online tools such as Drawio are great! However, for those with a preference to use in-editor tools I have found the extensions below to be useful.

Umlet by The Umlet Team

Umlet allows users to create a wide array of useful diagrams. So far, my primary application of this tool has been in designing class diagrams for relatively basic C# programs while at University. For example, the below class diagram is for a mindfullness activities app:

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